Reamer.



J. WITANOWSKI.

REAMER. APPLICATION FILED MAY 25. 1916.

. Patented Oct. 24,1916.

fl 3/ Z5613 WzZazwwizz 1 I nv1z'r1To c 2 JOHN WITANOWSKI, OF CHICAGO, ILLINOIS.-

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To all whom it may concern;

Be it known that I, JOHN WITANOWSKI, a

citizen of the United States, residing at Chicago, in the county of Cook and Stateof Illinois, have invented new and useful Improvem'ents' in Reamers, of'which the following is aspecification.

This inventlon relates to reamers having adjustable cutters to vary the size of the cut, adjustment being (affected by a traveling nut having a cone-shaped end engaging the seat inthese recesses, any desirednumber' inner ends of the cutters,the latter being advanced when the nut is advanced.

The invention has for its ob ect to provide a novel and improved adjusting meansof the kind stated, whereby any desired adjustment may be readily and accurately effected. z

With the object stated in view, the invention consists in a novel combination and .arrangement of parts to be hereinafter described and claimed, reference being had .to

the accompanying drawing forming a part of this specification.

In the drawing, Figure 1 is a side elevation of the tool; Fig. 2 is an end view thereof; Fig. 3 is a central longitudinal section; Fig. 4 is a section on the line 4-4 of Fig. 2; Fig. 5 is a section on the line 5-5 of Fig. 1; Fig. 6 is a side elevation of one of the cutters Fig. 7 is a rear end view of the cutter, and Fig. 8 is a front end viewof the cutter.

Referring specifically to thedrawing, 10 denotes the stock of the tool, the same being cylindrical and having at its inner end a socket 11 'for connection to the support or tool spindle, 12, the stock being locked on the spindle by a cross pin14 projecting at its ends from the side of the spindle and seating inside apertures 13 in the socketed end of the stock. The stock 1.0 also has an axial bore 15 extending forward from the socket 11, and" from which-bore recesses 16 extend 'forward and sidewise to open through the side of the stock adjacent to itsforward end. The cutters, to be presently described,

thereof being provided. The drawing shows a tool having four cutters. At the junction of the recesses "16 with the bore 15, the latter Specification of Letters Patent.

Patented. Oct. 24. 1916.

application filed May 25, 1916. Serial No. 99,788.

inner ends of the recesses 16, made conical as shown at 20. The'nut is tapped to receive the threaded end of a non-traveling screw 21 mounted in the bore 17, and having a.

head 22 which seats in the recess 18 and has an angular socket 23 for application of a with respect to the stock 10, the nut beingprevented from turningin the bore '15 by a screw 26 threaded sidewise throu h the stock and having its inner reduced en seating in a longitudinal groove 27 in the side of the nut. a

In each recess 16 is slidably mounted a cutter having its body or shank 28 cylindrical to conform to the cross-section of the recess. The cutter has two side bevels 29 at its inner end, leaving a butt rear end 30 10 and having its inner end seating in the groove 33 holds the cutter from turning in the recess 16 but leaves it free to slide therein.

It will be seen from the foregoing, that when the screw 21 is turned to advance. the nut 19, the cutters 28 are pushed outward to project the desired distance from'the side of the stock 10, and motion of the nut in the opposite directionallows the cutters to be pushed, inward.

The outer face of the screw head 22 is flush with the corresponding. end 'of the stock and has a circular series of graduations'35 coo crating with index marks 36 on the end 0 the stock for accurately gaging the hereinbefor described adjustment of the cutters 28.

To look the cutters28 adjusted position a screw 37 is threaded into'the outer end 0 the stock 10 opposite each cutter. The inner end of this screw is conical as shown at 38 and bears against the side of the cutter.

' The surface of the stock 10 where the cutters 28 protrude is? sunken as' 'shown 211.39 to conform to the hollow of the cutting portions 32 and 'to promote. the curling of the shavings.

The stock 10 is loose on the pins 14, which relieves the tool of inaccuracy in centering from stiifness, and allows it to center itself when inserted into the work, or as the work is advanced about the tool.

I claim:

1. A reamer comprising a stock having an axial bore, and recesses extending forwardly and sidewise therefrom through the side of the stock, a nut slidably and non-rotatably mounted in said bore and having a conical end, a non-traveling screw extending axially into the stock from the outer end thereof and threaded into the nut, cutters slidably and non-rotatably mounted in the aforesaid recesses and abutting at their inner ends against the conical end of the nut.

2. A reamer comprising a stock having a socket at its inner end for connection to a support, and an axial bore extending forward from the socket, with recesses extending forwardly and sidewise from the bore through the side of the stock, a nutslidably and non-rotatably mounted in said bore and having a conical end, a non-traveling screw extending axially into the stock from the outer end thereof and threaded into the nut, cutters slidably and non-rotatabl mounted in the aforesaid recesses and a utting at their inner ends against the conical end of g the nut.

and non-rotatably mounted in the aforesaid recesses and abutting at their inner ends against the conical end of the nut, and set screws threaded into the stock from the outer end thereof to engage the cuttersand lock the same in the recesses.

l. A reamer comprising a stock having an axial bore, and recesses extending forwardly and sidewise therefrom through the side of the stock, a nut slidably and non-rotatably mounted in said bore and having a conical end, a non-travelingscrew extending axially, into the stock from the. outer end thereof and threaded into the nut, cutters slidably mounted in the. aforesaid recesses and abutting at their inner ends against the conical end of the nut, the shanks of said cutters having side grooves, and set screws threaded through the stock to enter said side grooves.

In testimony whereof I aifix my signature.

JOHN WITANOWSKI. 

